Car accidents or chest trauma. Small aneurysms usually don’t cause any symptoms. However, as aneurysms get bigger and depending on their location, they can cause pain in the groin, lower back, lower abdomen, chest, or above or behind your eye.

Larger aneurysms can also lead to fainting spells, vision changes, a drooping eyelid, numbness or weakness on one side of your face or body, or symptoms of heart failure.

These symptoms can signal that a rupture may occur—perhaps very soon. This is a medical emergency; you might need immediate surgery to repair the weakened blood vessel.

Call your doctor, or seek emergency treatment without delay if you experience any of these symptoms, especially if you have heart disease.